Val-Matic 25 Air Release Valve User Manual
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VAL-MATI
905 River
Phone (63
www.valma
®
VALVE A
side Dr.
) 941-7600
tic.com
D MANUF
Elmhur
● Fax (630
CTURING C
t, IL 6012
) 941-8042
RP.
VAL-MATIC'S AIR RELEASE VALVE
g
(Simple Lever Type)
OPERATION, MAINTENANCE AND INSTALLATION
INTRODUCTION
This manual will provide you with the information
to properly install and maintain the valve to
ensure a long service life. The Air Release Valve
has been designed with stainless steel trim to
give years of trouble-free operation. The Air
Release Valve is typically mounted at the high
points in a piping system to automatically remove
pockets of air as they accumulate. The valve can
also be used to slowly release air in tanks and
pump casings.
Note: This valve is not intended for fluids
containing suspended solids such as wastewater.
For waste-water and other high turbidity
applications, use Val-Matic Series 48A & 49A
Sewage Air Release Valves.
CAUTION
This valve is not intended for fuel service
or fluids containin
The valve is a float-operated, resilient-seated
valve designed to handle clean fluids. The
Maximum Working Pressure and Model No. are
stamped on the nameplate for reference.
RECEIVING AND STORAGE
Inspect valves upon receipt for damage in
shipment. Handle all valves carefully without
dropping. Valves should remain boxed, clean
and dry until installed to prevent weather related
damage. For long term storage greater than six
months, the valve must remain in the box and
stored indoors. Do not expose valve to sunlight
or ozone for any extended period.
DESCRIPTION OF OPERATION
The Air Release Valve is designed to
automatically remove air pockets at the high
points in a piping system. The valve, as shipped,
is a normally open valve and will slowly vent air
through the top orifice. As fluid enters the valve,
the float will rise, closing the orifice. As air
accumulates in the piping system and enters the
valve, the float drops allowing the venting orifice
to open.
suspended solids.
FIGURE 1. Simple Lever AIR RELEASE VALVE
The lever mechanism provides mechanical
advantage for the float. During system operation,
the pipeline pressure exerts a strong upward
force on the sealing component, the orifice
button. The lever mechanism magnifies the
weight of the float so that the orifice will open
under high pipeline pressures. Additional ports
are provided for flushing, testing and draining
purposes.
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